[Webkit-unassigned] [Bug 232378] New: 3D-objects appear without texture/mesh on iOS 15+

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=232378

            Bug ID: 232378
           Summary: 3D-objects appear without texture/mesh on iOS 15+
           Product: WebKit
           Version: Other
          Hardware: iPhone / iPad
                OS: Other
            Status: NEW
          Severity: Minor
          Priority: P2
         Component: WebGL
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: bankey1443 at gmail.com
                CC: dino at apple.com, kbr at google.com, kkinnunen at apple.com

Created attachment 442588

  --> https://bugs.webkit.org/attachment.cgi?id=442588&action=review

3d-model without color (should be orange)

https://github.com/google/model-viewer

When using model-viewer (https://github.com/google/model-viewer) on an iPhone with iOS 15.0+, it seems like the 3d-object sometimes displays without textures. While this seems to only affect a small subset of our 3d-objects, it seems pretty consistent to replicate on my iPhone. On first load it usually displays the 3d-model without any color (see attachment), or partially colored, and if you refresh and try again, the page seems to crash or refresh. AR works as intended.

We have tested this on the following devices:
Android - working
iPhone XR/Safari/iOS 13 - working
iPhone 7/Safari/iOS 15 - not working
iPhone XR/Safari/iOS 15.0.2 - not working

Here is a live demo where, on my iPhone, it either works, displays either black/gray (without textures), refreshes the page, or crashes the page seemingly randomly when I try to test it by refreshing the page constantly: https://crawling-bronzed-dash.glitch.me/

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.webkit.org/pipermail/webkit-unassigned/attachments/20211027/230a081c/attachment-0001.htm>